A teenage girl who died in a three-car collision in South Wales was "funny, kind and caring", her brother has said.

Demi Edmunds, 17, died at the scene of the crash on the A4042 in Cwmbran, Monmouthshire, at around 12.25pm on Thursday, Gwent Police said.

The teenager from nearby Caldicot, was the only pedestrian involved in the incident.

Her brother, Jake, said in a tribute published by Gwent Police that she was "the best sister I could've ever asked for. She was funny, kind and caring.

"Me and her were very close, she was like a best friend to me that I could trust with anything and everything, but she's no longer with us any more.

"Hopefully she's in heaven, somewhere better."

The girl's family, who police said have asked for privacy, said in a shared statement that Demi was "a beloved daughter, granddaughter, sister, cousin and niece.

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"Demi loved her friends, and she was loved by all", they said, describing her as "once met, never forgotten".

Detectives have appealed for the public's help, including anyone with CCTV or dashcam footage of the incident.